Abstract
The Chevrel-phase compounds PbMo6S8 and Cu1.8Mo6S8 have been investigated by tunneling spectroscopy. These superconductors show a very strong electron-phonon interaction expressed by 4≤2δ0/kT c≤5. Structures in the tunneling density of states have been observed at most energies where the phonon spectra show maxima. The coupling of high-energy modes of the Mo6S8 units and of modes associated with displacements of the Pb (Cu) atoms are discussed.
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Poppe, U., Wühl, H. Tunneling spectroscopy on the superconducting Chevrel-phase compounds Cu1.8Mo6S8 and PbMo6S8 . J Low Temp Phys 43, 371–382 (1981). https://doi.org/10.1007/BF00116162
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DOI: https://doi.org/10.1007/BF00116162